Variable,Variable name,Measurement unit,Allowed values,Description Authors of the study,AUTHORS,String,,The name of the authors Year of publication,YEAR,YYYY,0000-3000,The year of publication of the article Article ID,ID,Numeric,>1,A number to identify the publication see the README file Median diameter,D50,mm,>0,The median diameter of the sediment Geometric standard deviation,SIGMA,None,>1,The geometric standard deviation of the sediment Specific density,SP_DENSITY,None,>0,The specific density of the sediment Upstream width,UP_WIDTH,m,>0,Upstream width of the channel Contracted width,CO_WIDTH,m,>0,Contracted width of the channel Ratio contracted/upstream width,RATIO_WIDTH,None,0-1,Ratio of the contracted width over the upstream width Upstream average flow velocity,UP_VELOCITY,m/s,>0,The upstream average flow velocity Critical shear velocity for sediment entrainment,CR_SHEAR_V,m/s,>0,The critical shear velocity for sediment entrainment Critical velocity for sediment ,CR_VELOCITY,m/s,>0,The critical velocity for sediment The ratio of UP_VELOCITY over CR_VELOCITY,RATIO_VELOCITY,None,>0,The ratio of the upstream velocity over the critical velocity The ratio of UP_VELOCITY over CR_VELOCITY by Dey and Raikar (2005),RATIO_VELOCITY_DEY_2005,None,>0,The ratio of the upstream velocity over the critical velocity as defined by Dey and Raikar (2005) Upstream flow depth,UP_DEPTH,m,>0,The upstream flow depth Flow depth at contracted reach,CO_DEPTH,m,>0,The flow depth in the contracted reach Equilibrium scour depth,SCOUR_DEPTH,m,>0,The equilibrium depth of scour Type of scour,TYPE_SCOUR,String,"""clear-water"" or ""live-bed""",The type of scour Length of the contraction,CO_LENGTH,m,>0,The lenght of the contraction in itself Shape of contraction,CO_SHAPE,String,,"The shape of the contaction (trapezoidal, parabolic, …)" Length downstream of the contraction,L_DOWN_CON,m,>0,The lenght downstream of the contraction Source,SOURCE,String,,Where the values in the table come from Comments,COMMENTS,String,,Some comments